"We're thrilled to introduce a new special agent by adding the very talented Jennifer Love Hewitt to our amazing cast," executive producer Erica Messer said in a statement. "Many of us on the show have enjoyed working with her over the years and look forward to again. We have exciting storylines planned for her character and the entire BAU team as we head into our 10th season."

Hewitt will make her debut in the Season 10 premiere, airing Wednesday, Oct. 1 at 9/8c on CBS. She steps into the gap left by Tripplehorn, who exited the show in the Season 9 finale after two years on the drama. She, in turn, was brought in to fill the void left by the departure of longtime cast member Paget Brewster.